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Novel dry coal powder entrained-flow bed deslagging system

A technology of dry coal powder and entrained bed, which is applied in the field of entrained bed gasification, can solve the problems of poor temperature control of the gasifier, too fast change, unstable coal properties, agglomeration and fine slag slag blocking, etc. Long-term stable operation, easy operation, and the effect of removing slag from the locking bucket system

Inactive Publication Date: 2014-10-08
HUANENG CLEAN ENERGY RES INST
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  • Application Information

AI Technical Summary

Problems solved by technology

Slag blocking is inevitable during the operation of the device, such as frequent switching of coal types, poor temperature control of the gasifier, too fast change, too low temperature, and unstable coal properties may cause large lumps and fine slag blocking

Method used

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  • Novel dry coal powder entrained-flow bed deslagging system

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Embodiment Construction

[0019] The implementation of the present invention will be described in detail below in conjunction with the drawings and examples.

[0020] like figure 1 As shown, a new dry coal powder entrained bed slag discharge system is responsible for cooling, granulating and discharging the liquid slag flowing out of the slag outlet. It includes a slag collector 1, a slag lock hopper 2 connected with a pressure circulation pump at the outlet of the slag collector 1, and a slag dewatering tank 3 with a chain slag extractor at the outlet of the slag lock hopper 2. The slag collector 1 receives the slag particles generated in the slag pool and the slag breaker, and the connecting pipeline between the slag collector 1 and the slag lock hopper 2 is provided with a first double valve group consisting of a first valve 4 and a second valve 5; The connecting pipeline between the lock hopper 2 and the slag dewatering tank 3 is provided with a second double valve group consisting of the third va...

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Abstract

The invention discloses a novel dry coal powder entrained-flow bed deslagging system for cooling, pelletizing and discharging liquid slag flowing out from a slag outlet. The system comprises a slag collector, a slag locking funnel and a slag dehydrating tank, wherein the slag locking funnel is arranged at a slag collector outlet and is connected with a pressure circulation pump; the slag dehydrating tank is arranged at a slag locking funnel outlet and is provided with a chain slag fishing machine; the slag collector is used for collecting slag generated inside a slag tank and a slag crushing machine; a first double-valve group consisting of a first valve and a second valve is arranged on a connecting pipeline of the slag collector and the slag locking funnel; a second double-valve group consisting of a third valve and a fourth valve is arranged on a connecting pipeline of the slag locking funnel and the slag dehydrating tank; and the connecting pipeline of the slag locking funnel and the slag dehydrating tank is connected with a high pressure water inlet tube with a high pressure washing partitioning valve. The system has the characteristics of security, simplicity and convenience in operation, effective blocked slag removal of a locking funnel system, and the like, and a constraint factor of long-term stable operation of a gasification device is eliminated.

Description

technical field [0001] The invention belongs to the field of entrained bed gasification, and relates to a slag discharge device, in particular to a novel dry coal powder entrained bed slag discharge system. Background technique [0002] Entrained bed gasification is an important form of coal gasification. The raw coal is fed into the furnace in powder form. The pulverized coal and gasification agent are sprayed into the gasifier through nozzles or burners, and are fully mixed and Combustion and gasification reactions. The gasification furnace provides a reaction space for the gasification reaction. The reaction temperature of the entrained bed gasification is very high, generally maintained at a high temperature of 1400-2000 ° C, thus ensuring the complete conversion of carbon. Gasification adopts the liquid slag discharge method. The slag is in a liquid state at high temperature and is cooled on the wall of the gasifier to form a solid and liquid slag film. The liquid slag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/52
Inventor 刘沅许世森任永强夏军仓刘刚罗丽珍
Owner HUANENG CLEAN ENERGY RES INST
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